使用 Node.js 和 Socket.IO 构建简单的聊天程序
在node.js根目录下创建文件夹chat，里面添加两个文件：app.js和index.html
app.js
var fs = require('fs'), http = require('http'), socketio = require('socket.io');var server = http.createServer(function(req, res) {res.writeHead(200, { 'Content-type': 'text/html'});res.end(fs.readFileSync(__dirname + '/index.html'));}).listen(8080, function() {console.log('Listening at: http://localhost:8080');});socketio.listen(server).on('connection', function (socket) {socket.on('message', function (msg) {console.log('Message Received: ', msg);socket.broadcast.emit('message', msg);});});
index.html
<html><head><script src="/ajax/libs/jquery/1.7.2/jquery.min.js"></script><script src="/socket.io/socket.io.js"></script><script>$(function(){var iosocket = io.connect();iosocket.on('connect', function () {$('#incomingChatMessages').append($('<li>Connected</li>'));iosocket.on('message', function(message) {$('#incomingChatMessages').append($('<li></li>').text(message));});iosocket.on('disconnect', function() {$('#incomingChatMessages').append('<li>Disconnected</li>');});});$('#outgoingChatMessage').keypress(function(event) {if(event.which == 13) {event.preventDefault();iosocket.send($('#outgoingChatMessage').val());$('#incomingChatMessages').append($('<li></li>').text($('#outgoingChatMessage').val()));$('#outgoingChatMessage').val('');}});});</script></head><body>Incoming Chat: <ul id="incomingChatMessages"></ul><br /><input type="text" id="outgoingChatMessage"></body></html>
开启服务器
node chat/app.js
打开两个chrome输入localhost:8080
这样就看到效果了，然后你可以慢慢研究代码了，再然后就洗洗睡吧。
使用的源码来自http://www.open-/lib/view/open1337216216557.html
